qemush/qemu/bin/pathof

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#!/bin/sh -e
# Invoked on termination if the last command failed
error() { >&2 echo "$(basename "$0"): ${*}"; }
error_envvar() { error "missing environment variable QEMUSH_NAME"; }
error_arg() { error "invalid argument \"${*}\""; }
# Assert that the QEMUSH_NAME variable is not null
trap error_envvar EXIT
[ -n "$QEMUSH_NAME" ]
# Determine the base dir to use
trap 'error_arg "$*"' EXIT
case "$1" in
disk)
basedir=disks
extension=qcow2
;;
socket)
basedir=sockets
;;
spice)
basedir=spice
extension=sock
;;
*)
false
;;
esac
# Release the trap
trap - EXIT
# Print the actual string
basedir="${HOME}/${basedir}"
[ -n "$extension" ] && extension=".${extension}"
printf %s/%s%s\\n "$basedir" "$QEMUSH_NAME" "$extension"